#! /usr/bin/env python


"""

maildir-dedupe [maildir1 [maildir2 [...]]]

Remove Messages with duplicate IDs from Maildirs

--drt@un.bewaff.net -- http://c0re.jp/

"""


import rfc822
import os, sys


def dedupe(dirname):
    msgbase = {}
    # check for new mail
    newdir = os.path.join(dirname, 'new')
    boxes = [os.path.join(newdir, f)
        for f in os.listdir(newdir) if f[0] != '.']
    # Now check for current mail in this maildir
    curdir = os.path.join(dirname, 'cur')
    boxes += [os.path.join(curdir, f)
        for f in os.listdir(curdir) if f[0] != '.']

    for fn in boxes:
       fp = open(fn)
       msg = rfc822.Message(fp)
       msgid = msg['Message-Id']
       if msgid in msgbase:
           print "deleting dupe %r: %r" % (msgid, fn)
           os.unlink(fn)
       else:
           msgbase[msgid] = None

if len(sys.argv) == 1:
    print __doc__
else:
    for x in sys.argv[1:]:
        dedupe(x)